I have used both the Hoka Bondi and the Stinson Trail in the marathon and the extra cushion was great. The Bondi is a bit lighter, but I think I prefer the Stinson with the better traction and wider more stable platform. I test shoes and have recently been using the yet to be released (July release date http://www.boulderrunningcompany.com/blog/2014/04/17/hoka-one-one-huaka-sneak-preview-available-7114/) Hoka Huaka, which I plan to use for both the BTMR and PPM. The Huaka is a sub 9oz shoe, but has way more cushion than anything in that weight range. The shoe is responsive, stable, has good protection and is really performance oriented. Though a road shoe, traction is sufficient for all but the steepest, loosest terrain and is plenty for Pikes. The only catch is that to be sub 9oz, the outsole has a good bit of foam, that will wear fast if used as a dedicated trail shoe and thus I save this shoe for racing only. FWIW, I have no affiliation with Hoka, just love the brand and believe in the concept, especially for running 13 miles down Pikes.